Quiz 3: Images
Raster graphics used for saving photo-realistic images and detailed complex drawings are called __________.
__________ is an area of memory where data such as text or images is temporarily stored when you (cut, copy, or paste) within an application.
__________ is the frequency of a light wave within the narrow band of the electromagnetic spectrum to which the human eye responds.
__________ are mathematical tables that define the color of a pixel displayed on the screen.
__________ images are purchased and then used without paying additional license fees. A) Public domain B) Royalty-free C) Rights-managed D) Thumbnail
Which of the following drawing tools use Bézier paths to mathematically represent a curve? A) Raster B) Vector C) Bitmap D) Pixel
Which of the following allows you to convert bitmapped images into vector images? A) Scaling B) Rendering C) Morphing D) Autotracing
Which lossless file format allows for millions of colors in its palette? A) GIF B) PNG C) JPEG D) PDF
What is the process called by which the color value of each pixel is changed to the closest matching color value in the target palette? A) dithering B) extruding C) screening D) saturating
Which of the following is a universal bitmap format used in desktop publishing? A) TIFF B) AI C) DXF D) KML
Light comes from __________ when electrons pass from higher to a lower energy level, thereby producing uniquely specific colors. A) photons B) rods C) cones D) atoms
Explain the major differences between bitmap and vector images. Bitmap images are created from a matrix of pixels, dots containing color information, while vector images are created from mathematical representations of Bézier curves. Bitmaps are well suited for photographic or continuous tone images, while vector images are more appropriate for illustrations or graphics such as logos. Scaling bitmaps larger results in lower resolution, while vector images may be scaled without loss to resolution.